In a televised address to the nation, delivered on March 23, 1983, President Reagan announced his vision of a world safe from nuclear threat. His Strategic Defense Initiative (SDI), later dubbed "Star Wars" by the press, is an idea that remains controversial to this day.
Here are the final two minutes of that speech.
Eleanor Roosevelt supported the President's New Deal and advocated for civil rights, becoming one of the 20th century's most influential women.
The story of a Vietnamese mother, the Amerasian daughter she sent away for adoption, and their reunion 22 years after the Vietnam War.
America came apart in 1964 and has since been reborn.
During World War II, more than a thousand women signed up to fly with the U.S. military as WASPS.
An African American minister whose dream of ending racism galvanized millions of Americans in the civil rights movement.
John Scopes' free speech trial pitted science against religion after the teacher presented Charles Darwin's theory of evolution in a Tennessee school.
The unusual life of David Vetter, who lived permanently inside a germ-free environment due to severe combined immunodeficiency.
Murderer, martyr, hero - John Brown's violent crusade against slavery would divide the nation and spark the Civil War.